[$itoa_nouse_intrr]
char* itoa_nouse_intrr(long num,char* str, u8 base)
{         

                 	//str[0] = '1';str[1] = '\0';return 0;
 
   
	long tmp = labs(num) , i = 0;

              if(tmp==0){//20221110 added to fix a bug

	str[i++] = 0 % 10 + '0';
            }


	while(tmp)                                   //将整数每一位转换成字符串
	{
		str[i++] = tmp % 10 + '0';
		tmp /= 10;
	}
	if(num < 0)                                  //判断正负性并添加负号
	{
		str[i++] = '-';
	}
	str[i] = '\0';
	char* s = str , *e = str+i-1;
	while(s<e)                                   //首尾交换
	{
		char t = *s;
		*s = *e;
		*e = t;
		s++,e--;
	}
	return str;
}